I have irregular cycles, when to do the test?
Updated on 12 November 2026
If your cycle is irregular, you don’t need to wait for a specific day: book your appointment whenever suits you.
Your hormonal results are always interpreted within your overall context, and our medical team takes cycle irregularity into account when reviewing them.
If you can, note roughly where you are in your cycle (or that it’s irregular) so the interpretation is as accurate as possible.
If your cycle is regular (every 21 to 35 days) and your Complete panel includes sex-hormone markers, do your blood test between day 3 and day 8 of your cycle, counting day 1 as the first day of your period. This window does not apply to the follow-up panel.
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